212342220240442 has 16 divisors (see below), whose sum is σ = 321755632661952. Its totient is φ = 105095311732800.

The previous prime is 212342220240361. The next prime is 212342220240529. The reversal of 212342220240442 is 244042022243212.

It is a junction number, because it is equal to n+sod(n) for n = 212342220240398 and 212342220240407.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1242175903 + ... + 1242346834.

It is an arithmetic number, because the mean of its divisors is an integer number (20109727041372).

Almost surely, 2^{212342220240442} is an apocalyptic number.

212342220240442 is a deficient number, since it is larger than the sum of its proper divisors (109413412421510).

212342220240442 is a wasteful number, since it uses less digits than its factorization.

212342220240442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2484523173.

The product of its (nonzero) digits is 98304, while the sum is 34.

Adding to 212342220240442 its reverse (244042022243212), we get a palindrome (456384242483654).

The spelling of 212342220240442 in words is "two hundred twelve trillion, three hundred forty-two billion, two hundred twenty million, two hundred forty thousand, four hundred forty-two".